Gas-burner



I. G. MARQUETTE.

y GAS BURNER. APPLICATION FILED NOV. Il, 1920.

Patented Nov. 22, 1921.

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IIIIIIIII" "III UNITED STATES PATENT OFFICE.

GAS-BURNER.

Specification of Letters Patent.

Patented Nov. 22, 1921.

Application led November 17, 1926. Serial No. 424,787.

To all whom it may concern:

Be it known that I, IRA G. MARQUETTE, a citizen of the United States,residing at lVheeling, in the county of Ohio and State of lVestVirginia, have invented certain new and useful Improvements inGas-Burners, of which the following is a specification.

This invention relates to gas burners and burner installations, and itcomprises a furnace having a fire-box, a grate arranged in saidfire-box, a plate or shield arranged over said grate to prevent passageof air into the fire-box, feed pipes disposed on said grate, burnersarranged in said feed pipes and projecting through said shield, saidburners being provided with air inlet openings arranged below saidshield, flanges arranged on said burners above said openings to directair to said openings, said burners being provided with inclined outletopenings at their upper ends, a flange arranged at the upper end of eachof said burners, and a deflector plate arranged substantially paralle-lto said outlet openings.

In the present invention, I have provided a burner installation forfurnaces and the like, wherein the ordinary furnace construction may beemployed and the feed pipes for the fuel placed on the grate. Aplurality of burner tubes project upwardly from the feed pipes and areprovided with air inlet openings, whereby sufficient air to supportcombustion may be delivered from the ash pit through the grate and mixedwith the fuel passing into the burner tubes. Above the air inletopenings, a plate or shield. preferably made of asbestos or similarmaterial is placed across the furnace to prevent introduction of airpassing through the grate into the upper part of the furnace where thefuel is burned. Each of the burners is further provided with means forintimately mixing the air and fuel upon its discharge from the burner tocause thorough and complete combustion.

The invention further comprises a burner consisting of a substantiallycylindrical tube having air inlet openings arranged near its lower end,an annular flange disposed above the air inlet openings, and an outletopening arranged at the top with a deflector plate slightly spaced fromthe opening and adapted to cause intimate mixture of air and fueldelivered from the burner and projected against the plate.

In the accompanying drawings, I have shown one embodiment of theinvention. In this showing: Y

Figure 1 is a front elevation of a portion of a furnace showing theinvention applied,

Fig. 2 is a horizontal sectional View on line 2 2 of Fig. 1,

Fig. 3 is a vertical sectional view of one of the burners, the deflectorbeing shown in elevation, and,

Fig. 4 is an end elevation of a burner.

Referring to the drawings, the reference numeral l designates the wallsof a furnace which may be made of any suitable refractory materialcapable of withstanding the heat generated within the fire-box 2. Thefront of the furnace is provided with lirebox doors 3, and ash pit doors4 in the usual manner. A grate 5 is arranged within the furnace betweenthe ash pit and the firebox. The construction heretofore described isthe usual furnace construction, and it will be noted that the inventionmay be applied to any furnace without materially modifying the presentconstruction.

Gas or other fuel is delivered to the furnace through the main feed pipe6 which may be provided with a valve or other control 7. A regulatingvalve 8 may be arranged in the main feed pipe to cause uniform flow offuel to the burners. A lurality of branch pipes 9 are connecte to themain feed pipe and extend through the fire box doors 3. These pipes areprovided with valves 10, whereby the flow of fuel to any of the branchesmay be controlled and one branch used independently of another. Asshown, the branch pipes are arranged in pairs and communicate withsubstantially rectangular pipes 11, arranged within the furnace anddisposed on the grate 5. A plurality of vertical outlets 12 areconnected to the pipes 11 and burner tubes 13fare suitably connected tothese pipes. The burner tubes are provided with restricted inletopenings 14 communicating with the pipes 12 at their lower ends and witha mixing chamber 15 at their upper ends. As shown, the mixing chamber isof materially greater diameter than the openings 14 and the flow of gasinto the mixing chamber is ada ted to cause introduction of air from theas pit into the burner tubes through openings 16. An annular flange 16is arranged above the openings, and adapted to deflect the air anddirect it into the mixing chamberof the burner tube. As shown, a shieldor plate of asbestos or other suitable material, is arranged 1n thefire-box, spaced from the grate, and disposed above the air inletopenings 1G. This shield prevents the air from the ash pit from flowinginto the upper portion of the tire-box where burning of the fuel takesplace.

The upper end of the burner tube is provided with an inclined outletopening 19 and a defiector plate 30 is spaced from the burner andarranged substantially parallel t-o this opening. The deflector platemay be supported on the burner in any suitable manner. as by arm 21. Theupper end of the burner is provided with a flange 22, arrangedsubstantially at right angles to the walls of the burner tube andadapted to direct the fiow of air'and fuel against the deflector.

In operation, the fuel is delivered to the pipe sections 11 from themain feed pipe 6 through branches 9. The fiow of fuel to the individualsections may be controlled through valves 10 and any of the sections maybe used independently7 of each other. The fuel passing through thevertical pipes 12 is delivered to the restricted passage-way 11 to theburner tubes, and upon enteriing the mixing chamber 15, draws airinwardly through openings 1G. The air is supplied to the ash pit by anysuitable type of draft, such as is usually employed in furnaces burningsolid fuel.

By means of the shield 18, passage of air into the upper portion of thetire-box where the fuel is burned. is prevented, and in this mannerHare-backs in the burner tubes are prevented.

The use of the shield 18 is further advan tageous in that it preventsthe passage of air through the furnace to the stack or chimney withoutfirst passing into the mixing chamber of the burner. The burners,therefore. receive and consume the proper amount of air. the air beingthoroughly mixed with the fuel before ignition to afford completecombustion.

The mixture of air and fuel passes through the mixing chamber to theburner outlet opening 19. whence it is delivered against the deflector20. A portion of the mixture strikes the flange 22 and is thrown backinto the main flow of air and fuel causing a whirling action andinsuring complete admixture before ignition. The complete admixture ofthe fuel is further insured by the provision of the deflector plates 20.the en tire mixture being delivered against the deflector plate at thetime it is burned, and

the flame being directed upwardly against the walls 1 of the furnace.,

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of the invention, or thescope of the subjoined claims.

Having thus described my invention, I claim:

1. In av furnace, a fire-box, a grate arranged therein, a shieldarranged above said grate, feed pipes disposed on said grate, burnersconnected to said feed pipes and projecting through said shield, andmeans for introducing air to said burners below said shield.

2. In a furnace, a fire-box, a grate arranged therein, a shield arrangedabove said grate whereby passage of air from the lower portion of thefire-box to the upper portion is prevented, feed pipes disposed on saidgrate, and burners connected to said feed pipes and projecting throughsaid shield into the upper portion of the fire-box, said burners beingprovided with air inlet openings arranged below said shield.

3. A gas burner comprising a substantially tubular member forming avmixing chamber, said member being provided with a restricted opening forthe inlet of fuel, and being further provided with a plurality of airinlet openings, a flange arranged on said tubular member above said airinlet openings. the upper end of said tubular member being provided withan inclinedv outlet opening. and a deflector spaced from said openingand arranged substantially parallel thereto.

4. A gas burner comprising a tubular member having` a restricted openingarranged at the bottom for the introduction of fuel, said member beingfurther provided with a plurality of air inlet openings arrangedadjacent said restricted opening` the upper end of said member beingprovided with an inclined outlet opening, a flange formed on the upperend of said member and partially covering said outlet opening, and adctleetor spaced from said opening and arranged substantially parallelthereto.

In testimony whereof I affix my signature iu presence of two witnesses.l

IRA G. MARQIIETTE. lVitnesses Aamnosn S. MILLER, J. lV. KINDELBERGER.

